Eysenck, Michael W., author
Psychology Press, 2001
Buku Referensi
Europa Publications Limited, 1993
Buku Referensi
Oxford University Press, 1972
Buku Referensi
general editor, David W. Pearce
Macmillan Press, 1992
Buku Referensi
Howell, Rate A., author
Dryden Press, 1988
Buku Referensi